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Home > Effects of Household Cooking Methods and Some Food Additives on Polycyclic Aromatic Hydrocarbons Pahs Formation in Small Ruminants Goat, Sheep Meat Varieties in Punjab, Pakistan

Effects of Household Cooking Methods and Some Food Additives on Polycyclic Aromatic Hydrocarbons Pahs Formation in Small Ruminants Goat, Sheep Meat Varieties in Punjab, Pakistan

Thesis Info

Access Option

External Link

Author

Naseer Ahmad

Program

PhD

Institute

Government College University

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2017

Thesis Completion Status

Completed

Subject

Chemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/12215/1/Naseer%20Ahmad%20chemistry%202017%20gcu%20fslbd%20prr.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726021159

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In this research formation of Polycyclic Aromatic Hydrocarbons (PAHs) in goat and sheep meat were studied during natural gas grilling, wood charcoal grilling and oil frying. The effect of different types of condiments in reducing the formation of PAHs during these procedures was also studied. The meat of five organs (chest, foreleg, heart, hind leg and liver of goat and sheep was obtained and cleaned well. After homogenizing, except control, each sample was cooked using three procedures and all the samples including controls after extracting and concentrating were analysed and identified using High Performance Liquid Chromatography (HPLC) and the mass of titled eight HPLC identified PAHs was verified using Gas Chromatography Mass Spectrometry (GCMS). The concentration of the tittled eight PAHs in control samples was not observed to be significant and the maximum increase in said eight PAHs was observed due to wood charcoal grilling. In case of goat, hind leg showed maximum concentration of PAHs in all cooking methods, ranging up to 11.11ng/g in gas grilling, 30.39ng/g in wood charcoal grilling and 24.82ng/g for oil frying. The minimum concentrations were found in liver ranging 0.47ng/g for gas grilling, 1.31ng/g for wood charcoal grilling and 0.74ng/g for oil frying. Similar trend of PAHs production was found in sheep meat. Effect of condiments on the formation of titled eight PAHs explained that modified condiments type III (Normal condiments + onion + garlic + ginger + clove + lemon juice) proved to be the best to reduce the formation of all the selected PAHs in the heat treated meat samples. T-test and ANOVA statistically confirmed the results with 95% confidence interval. It was concluded that open flame grilling should be avoided and condiments used prior to cooking minimize the production of PAHs.
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غزل

غزل ۔۔۔ڈاکٹر محمد کامران

پروفیسر پنجاب یونیورسٹی لاہور

 

ایسا بھی نہیں تم سے مجھے پیار نہیں ہے

لیکن مجھے اس بات پہ اصرار نہیں ہے

 

میں نے یہ غزل موجٍ صبا تجھ پہ کہی ہے

حالانکہ مجھے تجھ سے سروکار نہیں ہے

 

اس شخص کی آنکھیں مجھے سونے نہیں دیتیں

دل جس کی محبت میں گرفتار نہیں ہے

 

میں نے بھلے وقتوں میں خریدا تھا کوئ خواب

اب اس کا کہیں کوئ خریدار نہیں ہے

 

ماں باپ کی عزت کا اسے خوف ہے ورنہ

اس شوخ کے انکار میں انکار نہیں ہے

The Importance of Emerging Sciences & Technology in the Light of Quran & Prophetic Teachings

Science and technology is on top position contemporary now it is need of our masses to compare these formulas with holy Quran because Quran is miracle and implementable till the day of  Judge ment  lot of scientists have benefited by Quran and they also agree up on the excellence of Quran. Hence in this research we have to prove dominancy of Quran over on the science and technology the hints of new inventions and discoveries are available in Quran if we study the Quran deeply we will find in it complete agreement with modern science however it was revealed in that time people were not aware from scientific inventions and they have not know-how of it. Comparatively this time is well advanced period and lot of things invented while concept of these things was present in this sky book I have drawn intention of readers on these points. In this research I would discussed that importance of science and technology specially the sub subjects of the modern science math and statistics geology, astronomy, space sciences, Embryology, Genetics and computer technology. It should be remember that the exposition of this book is also two types scientifically and logically because Quran invites us towards intelligence and wisdom.   It is responsibility of scholars to interpret the Quran contemporary because this is not merely ancient book but it is for all times and not for Arabs but for guide line of whole humanity of entire universe. It is challenges itself that no any kind of error or mistake in it foes of Islam tried to find faults but they not succeeded to do so resulting they affirmed dignity of it over on all the books.

Screening of Pakistani Honeys for Antibacterial Potential Against Multi-Drug Resistant Salmonella Typhi

The development of resistance to conventional anti-typhoid drugs and recent emergence of fluoroquinolone resistance had made it very difficult and expensive to treat typhoid fever. More recently, the appearance of extended-spectrum beta-lactamases (ESBLs) in Salmonella typhi is leading to a situation where, in some conditions, the disease may well be untreatable without extremely expensive injectables or combination therapies. As the therapeutic strategies are likely to dwindle, it becomes imperative to look for non- conventional modalities to meet any future possible challenges. Recently medical profession has rediscovered the unique and repertoire of antibacterial properties (acidity, osmolarity, hydrogen peroxide and plant derived non-peroxide activity) of honey. On the basis of these properties, Food and Drug Administration (FDA) of USA and European countries approved manuka honey (New Zealand) and medihoney (Australian) as therapeutic agents for the treatment of chronic skin infections and burns. However, its role in systemic infections like typhoid fever is not determined. In addition, striking variation in the potency of antibacterial activity of honey between different floral sources and even within the same floral source does exist. Hence, it is imperative to assay antibacterial activity of honey before consideration for therapeutic use. In Pakistan, there is great diversity in honey varieties because of the richness in bee flora; therefore, it is believed that there are several unrecognized honeys of high therapeutic value in this part of the world. Twenty four blood culture isolates of typhoid salmonellae including MDR-S. typhi (n=16) were investigated for their susceptibility to manuka honey, black seed honey, shain honey and simulated honey. An agar dilution assay was adopted for the determination of minimum inhibitory concentration. Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) Enterococcus faecalis (ATCC 29212) and Acinetobacter baumannii (ATCC 29212) were included as the standard control strains. Additionally, one hundred samples of Pakistani unifloral honey from nineteen common bee flora, produced by bees (Apis mellifera) were collected from different geographical areas of Pakistan. They were screened for both total (acidity, osmolarity, hydrogen peroxide and non-peroxide activity) and plant derived non-peroxide antibacterial activity against one blood culture isolate of multi-drug resistant (MDR) S. typhi by agar well diffusion assay. Manuka (Unique Manuka Factor-21) honey was used as standard. The total antibacterial activity of these honey samples were standardized in accordance with phenol equivalence % (w/v). Regarding MICs, manuka honey inhibited all clinical isolates of typhoidal salmonellae at concentration median 7.67+1.0% (v/v), black seed honey median 9.0±1.0% (v/v) and shain honey at median 12.0±1.0% (v/v). Simulated honey inhibited these isolates at concentration median 30±0.0% (v/v). Whereas, manuka honey inhibited all ATCC reference strains between the MICs range of 5.0 to 9.0% (v/v), black seed honey at 6.0% to 10.0% (v/v), shain honey at 10 to 14 % (v/v) and simulated honey at 30 to 35% (v/v). This demonstrates that antibacterial effect of natural honey is not linked with high osmolarity alone and there are other factors contributing to antibacterial activity. Screening of antibacterial activity of one hundred unifloral honey samples against blood culture isolate of MDR-S. typhi revealed that nineteen honey samples (19%) displayed higher antibacterial activity (16-20 % of phenol), which is more than that of manuka honey (21-UMF). Thirty percent honey samples demonstrated antibacterial activity between the ranges of 11-15% of phenol, similar to that of manuka honey and about 51% of honey samples did not exhibit any zone of inhibition against MDR-S. typhi at 50% (w/v) dilution. Since manuka honey used in this study is standardized product with 21- UMF and approved by FDA as therapeutic agent. Therefore, those honey samples which displayed antibacterial activity equal to or greater than manuka honey, may be utilized in those clinical conditions, where higher hydrogen per-oxide related antibacterial activity is needed like leg ulcers, diabetic foot ulcers, burns, skin graft donor sites and surgical wounds. These newly identified honeys may add value to the existing honey resource. Keeping in view the tremendous variation in the potency of antibacterial activity of honey, it is essential that research may continue beyond commercially available honey to those, locally produced, as yet untested. However, none of Pakistani honey samples displayed non-peroxide activity. Only manuka honey showed non-peroxide activity when catalase enzyme was added to neutralize the hydrogen peroxide related antibacterial activity at 25% dilution (w/v). Nevertheless, MICs of black seed honey and manuka by agar dilution assay are comparable. The agar dilution assay provides more reliable, reproducible and quantitative results as compared to agar well diffusion assay which is less sensitive and only provides qualitative results. Therefore, both manuka honey and black seed honey warrants further evaluation in suitable typhoid animal model for future prevention and treatment of typhoid fever.